// JavaScript Document
var popupStatus = 0;
function loadPopup() { 
    if(popupStatus==0) { 
        $("#backgroundPopup").css({"opacity": "0.7"}); 
        $("#backgroundPopup").fadeIn("slow"); 
        $("#popupContact").fadeIn("slow"); 
        popupStatus = 1; 
    } 
} 
function disablePopup() { 
    if(popupStatus==1) { 
        $("#backgroundPopup").fadeOut("slow"); 
        $("#popupContact").fadeOut("slow"); 
        popupStatus = 0; 
    } 
} 
function centerPopup() { 
    var windowWidth = document.documentElement.clientWidth; 
    var windowHeight = document.documentElement.clientHeight; 
    var popupHeight = $("#popupContact").height(); 
    var popupWidth = $("#popupContact").width(); 
    $("#popupContact").css({ 
        "position": "absolute", 
        "top": windowHeight/2-popupHeight/2, 
        "left": windowWidth/2-popupWidth/2 
    }); 
    $("#backgroundPopup").css({"height": windowHeight}); 
} 
$(document).ready(function() {
	$("#popupContactClose").click(function(){ disablePopup(); });
	$("#backgroundPopup").click(function(){ disablePopup(); });
	$(document).keypress(function(e){ if(e.keyCode==27 || popupStatus==1) disablePopup(); });
	$(window).bind('resize', function(){ centerPopup("fix"); });
	$("#quydinh").click(function(){
		centerPopup("fix");
		loadPopup();
	});
});